1. Open Encrypted Zip File
2. Crack Password Protected Zip File Linux
3. Crack Password Protected Zip File

After seeing how to compile John the Ripper to use all your computer's processors now we can use it for some tasks that may be useful to digital forensic investigators: getting around passwords. Today we will focus on cracking passwords for ZIP and RAR archive files. Luckily, the JtR community has done most of the hard work for us. For this to work you need to have built the community version of John the Ripper since it has extra utilities for ZIP and RAR files.

Ultimate ZIP Cracker can help you recover password-protected files that you have forgotten the password for. All you have to do is tell the program as much as you know about the password you're. How to Crack Password Protected ZIP Files. ZIP file is a widely used file software in our daily work and life. It can be used to store or send large files especially in Office, the feature of saving the space to store files by compressing it to a smaller size is known to us. For example, we cannot put the rar AND zip hashes in the same file. But this means you could try to crack more than one zip/rar file at a time.For the rar file it did not take nearly as long since the password was relatively common. If you take a look at john.conf in the run directory, it has a list of the patterns it checks (in order).

1. Compatible with over 60 archive formats. PowerArchiver is fully compatible with all archives and encrypted files your business partners might send you – zip, zipx, 7z, iso, rar, OpenPGP and 60 more formats are supported.
2. Now let's see to encrypt a zip file $ zip -e pprotected.zip. Nocturnal.txt -e (for encryption of files) pprotected.zip (new encrypted file name you could give as you wish) nocturnal.txt (file name you wanna encrypt) After the command it'll ask for password. Try with a simple password first for testing the tool. Move your encrypted file into.

Open Encrypted Zip File

For this exercise I have created password protected RAR and ZIP files, that each contain two files.

Crack Password Protected Zip File Linux

The password for the rar file is 'test1234' and the password for the zip file is 'test4321'.
In the 'run' folder of John the Ripper community version (I am using John-1.7.9-jumbo-7), there are two programs called 'zip2john' and 'rar2john'. Run them against their respective file types to extract the password hashes:
This will give you files that contain the password hashes to be cracked... something like this:
After, that you can run John the Ripper directly on the password hash files:
You should get a message like: Loaded 1 password hash (PKZIP [32/64]). By using John with no options it will use its default order of cracking modes. See the examples page for more information on modes.
Notice, in this case we are not using explicit dictionaries. You could potentially speed the cracking process up if you have an idea what the password may be. If you look at your processor usage, if only one is maxed out, then you did not enable OpenMP when building. If you have a multi-processor system, it will greatly speed up the cracking process.

Crack Password Protected Zip File

Now sit back and wait for the cracking to finish. On a 64bit quad-core i7 system, without using GPU, and while doing some other CPU-intensive tasks, the password was cracked in 6.5 hours.
Now if you want to see the cracked passwords give john the following arguments:
It should output something like:
Note: the hash file should have the same type of hashes. For example, we cannot put the rar AND zip hashes in the same file. But this means you could try to crack more than one zip/rar file at a time.
For the rar file it did not take nearly as long since the password was relatively common. If you take a look at john.conf in the run directory, it has a list of the patterns it checks (in order). The pattern 12345 is much more likely than 54321, so it is checked first resulting in a quick crack.